Chess Board
[ECO code D30] Move Move Here
QGD. TRANSPOSITION
(to) Tarrasch Defence

White's QBPawn removes Black's QP on Q5(d5) and invites an exchange, giving Black two ways to recoup the pawn - with his QBP or (usually) his KP.
Black recoups with his King's Pawn (although it is likely to result in an isolated queen's pawn or IQP).
	White	Black
 1.	P-Q4	P-Q4
 2.	P-QB4	P-K3
 3.	Kt-KB3	P-QB4
 4.	BPxP	KPxP

WHITE to Move or Undo or Jump or Clear
 
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